Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Enzymes can be classified by the types of reactions they do (as per chapter 21). From the
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- Find an example of an enzyme. Answer the following questions about the enzyme that you chose. a) What is the chemical reaction that is catalyzed by the enzyme? b) Why is this enzyme/chemical reaction important to the organisms in which it occurs?arrow_forwardAll the Bold answers are wrong please explain why it is wrong and give me the correct answer. Thanks, in advanced Which of the following is true about enzymes? Enzymes are equally effective across broad ranges of temperature and Ph. Enzymes lower the overall free energy of a reaction to make it spontaneous. Enzyme activity is generally unregulated. Enzymes recognize many substrates with equal specificity. The insulin receptor catalyzes the phosphorylation of several substrates and is therefore classified as a Transferase Phosphate Kinase Lyase Oxidoreductase 3)Which of the following reaction parameters can enzymes optimize to increase reaction rate? The proximity(=closeness) of the reacting groups. The rotational motions of the substrates and catalytic groups. The orientations of the substrates and catalytic groups. The achieve energy needed to achieve the transition state. The catalytic mechanism of RNA relies upon general acid-base catalysis involving the amino acid…arrow_forwardAn organic cofactor (usually derived from a vitamin or a nucleotide), which is tightly attached to the enzyme (like FAD when used by the Krebs cycle enzyme succinate dehydrogenase), is always called: the metalloenzyme the metal-activated enzyme the holoenzyme the prosthetic group the cosubstratearrow_forward
- Substrates bind to an enzymes sitearrow_forwardThe class of enzymes that cleaves most aromatic rings in biological systems is _____________. oxygenases lyases aminotransferases glutamate dehydrogenasesarrow_forwardWhat are the biological actions of enzymes ? What reactions do they catalyze? please include citationarrow_forward
- Figure #1 and #2 show the results collected from a fun enzyme activity lab that did NOT involve the liver;) Answer the questions that follow. REACTION RATE (mg/sec) -1 m O 0 1 2 3 4 5 6 Rate of Reaction Enzyme A Rate ofreaction pH Figure #1 pH and enzyme reaction rate 0 10 7 8 9 10 11 12 13 14 Enzyme B Temperature 35 40 Enzymes A and B Figure # 2 The effect of temperature (°C) on enzyme activity a. Looking at these results, could these enzymes (A and B) be found somewhere in the human body? If so, where? Explain your answer, and be sure to discuss both factors (pH and temperature) as they relate to enzyme activity/rate of reaction.arrow_forward_________________ is the general term for molecules that enzymes modify to produce reaction products.arrow_forwardWhat is expected to happen to the reaction rate with increasing temperature? (Enzyme kinetics)arrow_forward
- Alcohol dehydrogenase turns ethanol to cetaldehyde in liver cells. Alcohol dehydrogenase is a kind of protein.arrow_forwardAt what temperature and what pH do most human enzymes work best?arrow_forwardWhat characteristics of enzymes contribute to their high degree of specificity in action?arrow_forward
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